HS 200 NCSU FINAL EXAM
QUESTIONS AND CORRECT
ANSWERS < RECENT VERSION
2025/2026 > SURE TO PASS!!
1. Ferns are in the class Filicinae. What is unique about
that Class of plants? - ANSWER ✓ they don't
reproduce by seeds but reproduce by spores instead
2. Grafting is a unique form of plant propagation. Why
would you want to graft a plant, after all, it requires
much skill and patience? - ANSWER ✓ plant breeding
often leads to plants that can't grow on their own roots,
this method allows them to thrive
3. Best method for vegetatively propagating many
herbaceous perennials with large expanding crowns: -
ANSWER ✓ division
,4. The process where one stimulates an azalea branch to
root before it is cut from the main plant is an example
of - ANSWER ✓ layering
5. "Rootone" is a material that can be applied to cuttings
to help stimulate adventitious rooting. Rootone is a
synthetic version of a naturally occurring plant
hormone called - ANSWER ✓ auxin
6. Why are seed longevities longer for temperate woody
plants than for annual herbaceous plants? - ANSWER
✓ Takes longer for a woody plant to mature to seed
bearing age than an annual, therefore the longevities of
their seeds need to be longer to insure perpetuation of
the species
7. Typically, how long does it take most air layers to form
roots? - ANSWER ✓ 3 months
8. When grafting two plants together the key to a
successful connection is - ANSWER ✓ using two
, compatible plants, vascular alignment, using the correct
stage of growth, and keeping the graft moisturized
9. A flower that has sepals, petals, and only a stamen is
most correctly termed - ANSWER ✓ staminate
10. Ideal gardening soil: - ANSWER ✓ 45% mineral, 5%
organic matter, 25% air space, 25% water space
11. Plant's absorbing roots don't grow in: - ANSWER ✓
B horizon
12. Term used to describe the event where water
percolates vertically through the soil taking salts, and
nutrients with it. - ANSWER ✓ leaching
13. When is the best time to plant temperate woody trees,
shrubs, and herbaceous perennials from the plant's
perspective? - ANSWER ✓ Fall
, 14. What does a soil probe do? - ANSWER ✓ takes a soil
profile
15. Soil is defined as: - ANSWER ✓ stuff plus space
16. What is the key to attracting more butterflies to your
garden? - ANSWER ✓ add plants that feed the
caterpillar stage of the butterfly lifecycle (like white
oak)
17. The bird population in North America is down 29%
(3 billion birds) since 1970. Why should we be
concerned about this? - ANSWER ✓ birds disperse
seeds contributing to biodiversity, many birds act as
pollinators, and birds contribute to a balanced
ecosystem
18. Why is it recommended that gardeners should choose
plants that attract & support native insect populations? -
ANSWER ✓ because birds feed their young
predominately native soft-bodied insects
QUESTIONS AND CORRECT
ANSWERS < RECENT VERSION
2025/2026 > SURE TO PASS!!
1. Ferns are in the class Filicinae. What is unique about
that Class of plants? - ANSWER ✓ they don't
reproduce by seeds but reproduce by spores instead
2. Grafting is a unique form of plant propagation. Why
would you want to graft a plant, after all, it requires
much skill and patience? - ANSWER ✓ plant breeding
often leads to plants that can't grow on their own roots,
this method allows them to thrive
3. Best method for vegetatively propagating many
herbaceous perennials with large expanding crowns: -
ANSWER ✓ division
,4. The process where one stimulates an azalea branch to
root before it is cut from the main plant is an example
of - ANSWER ✓ layering
5. "Rootone" is a material that can be applied to cuttings
to help stimulate adventitious rooting. Rootone is a
synthetic version of a naturally occurring plant
hormone called - ANSWER ✓ auxin
6. Why are seed longevities longer for temperate woody
plants than for annual herbaceous plants? - ANSWER
✓ Takes longer for a woody plant to mature to seed
bearing age than an annual, therefore the longevities of
their seeds need to be longer to insure perpetuation of
the species
7. Typically, how long does it take most air layers to form
roots? - ANSWER ✓ 3 months
8. When grafting two plants together the key to a
successful connection is - ANSWER ✓ using two
, compatible plants, vascular alignment, using the correct
stage of growth, and keeping the graft moisturized
9. A flower that has sepals, petals, and only a stamen is
most correctly termed - ANSWER ✓ staminate
10. Ideal gardening soil: - ANSWER ✓ 45% mineral, 5%
organic matter, 25% air space, 25% water space
11. Plant's absorbing roots don't grow in: - ANSWER ✓
B horizon
12. Term used to describe the event where water
percolates vertically through the soil taking salts, and
nutrients with it. - ANSWER ✓ leaching
13. When is the best time to plant temperate woody trees,
shrubs, and herbaceous perennials from the plant's
perspective? - ANSWER ✓ Fall
, 14. What does a soil probe do? - ANSWER ✓ takes a soil
profile
15. Soil is defined as: - ANSWER ✓ stuff plus space
16. What is the key to attracting more butterflies to your
garden? - ANSWER ✓ add plants that feed the
caterpillar stage of the butterfly lifecycle (like white
oak)
17. The bird population in North America is down 29%
(3 billion birds) since 1970. Why should we be
concerned about this? - ANSWER ✓ birds disperse
seeds contributing to biodiversity, many birds act as
pollinators, and birds contribute to a balanced
ecosystem
18. Why is it recommended that gardeners should choose
plants that attract & support native insect populations? -
ANSWER ✓ because birds feed their young
predominately native soft-bodied insects
